Rousu v. State of Minnesota

Background

On August 28, 2025, Rousu was allegedly observed harvesting wild rice on Height of Land Lake using a motor-propelled airboat and mechanical harvester. Minnesota law prohibits certain methods and hours of wild-rice harvesting in public waters. Rousu alleged that conservation officers seized his airboat and approximately 300 pounds of rice. He was later charged in Minnesota state court with three misdemeanor counts of unlawful wild-rice harvesting.

Rousu filed this federal lawsuit the next day. He asserted that an 1855 treaty protected his harvesting rights and preempted Minnesota law. His complaint included a treaty-related claim under the Supremacy Clause, two claims under 42 U.S.C. § 1983, a claim for a declaration under 28 U.S.C. § 2201, and a Minnesota common-law conversion claim. He sought declaratory and injunctive relief, return of his property, and compensatory and punitive damages.

Younger Abstention

The defendants moved to dismiss under Rules 12(b)(1) and 12(b)(6), arguing that the complaint failed to state claims and that some claims were barred by sovereign or qualified immunity. The court did not decide those arguments because it identified a separate threshold issue: whether the federal case should be halted to avoid interfering with Rousu’s ongoing state criminal proceedings.

The court applied the Younger abstention doctrine. This doctrine generally requires a federal court to avoid interfering with an ongoing state criminal case when the case involves important state interests and the person has an adequate opportunity to raise federal issues in the state proceeding. The court found all three conditions satisfied. It found no indication that the prosecution was brought in bad faith or that the Minnesota statute was facially unconstitutional. It also found important state interests in managing natural resources and balancing those interests with treaty rights.

The court emphasized that Rousu had already raised in state court the same basic argument presented in the federal case: that his treaty rights allowed him to harvest wild rice in the treaty-ceded territory despite Minnesota’s criminal laws. Because the state court could resolve that issue, and because a federal ruling in Rousu’s favor could undermine the state prosecution, the court abstained from deciding the federal claims.

The court dismissed without prejudice the portions of the federal claims seeking injunctive or declaratory relief. It also dismissed without prejudice the portions seeking damages under § 1983 because deciding those claims would require the court to determine that Minnesota’s harvesting laws were unconstitutional or preempted by the treaty. The court did not decide whether Rousu’s treaty theory, constitutional claims, or other federal claims had merit.

Conversion Claim and Disposition

The remaining claim was Rousu’s Minnesota common-law conversion claim concerning the seized airboat and wild rice. After dismissing all claims within its original federal-question jurisdiction, the court declined to exercise supplemental jurisdiction over the state-law claim. It dismissed that claim without prejudice so that it could be considered, if at all, by Minnesota courts.

The order therefore states that the defendants’ motion to dismiss was granted as to Rousu’s conversion claim arising under Minnesota common law and denied as moot as to Rousu’s claims arising under federal law. The court also ordered that Rousu’s complaint be dismissed without prejudice. The opinion states that the court did not need to address the defendants’ separate arguments concerning failure to state a claim, sovereign immunity, or qualified immunity.